[rules-users] Drools 5.5 : Problems with big rules file (~1.5Meg)

[Nicolas Héron]

Hi,
In your rule, in the then part do you create java objects ?
THe best thing would be to have a test case that reproduce this so we can
help to find out.
You should add some listeners to see what is happening, maybe some rules do
an infinite loops or stuff like this ? You have to find out which rule, set
of rules do your effect.
I do not think it comes from drools. I did project with 200k rules, it is
slow to build the package but once this is done, the rest works perfectly.
Have you tried to cut your drl file in smaller files ?
Cheers
Nicolas


2013/9/16 peter.kutzner [via Drools] <
ml-node+s46999n4025981h44 at n3.nabble.com>

> Hi Nicolas
>
> Thx for your quick answer.
>
> Ok, i forgot some informations:
> Using : Java6.0.45 X64 (same problems using Java 7 X64)
>
> No, i don't use listeners.
> I tried with up to 10Gig without success.
>
> My (reduced) workflow is :
>
> 1) <code>
> kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
> kbuilder.add(ResourceFactory.newClassPathResource(RULES_PATH, getClass()),
> ResourceType.DRL);
> kbase = KnowledgeBaseFactory.newKnowledgeBase();
> kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());
> </code>
> 2) <code>
> StatefulKnowledgeSession ruleSession =
> kbase.newStatefulKnowledgeSession();
> </code>  so far so good
> 3) insert two supporter objects in session
> 4) add two more worker objects in session
> 5) fire all rules
> 6) read and retract all expected objects
> 7) dispose session
>
> Processing Steps 2)-7) (in a loop with different worker objects, to
> produce load, so there is always only
>  one session active) work fine for a view times (3-9) then the mentioned
> exception occurs.
> I also tried it with 10gig for the jvm but in either test the memoryload
> does not exceed 3gig.
>
> With a reduced rules file size (to < 500k; removed some rules, to test
> this) i can handle 300000(!)
> loops without any exceptions.
>
> Hope this infos will help.
>
> Regards
> Peter
>
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Nicolas Héron
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